Update the tcmalloc chromium branch to r144 (gperftools 2.0), and merge chromium-specific changes.

chrome/browser/memory_purger.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/memory_purger.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/history/history.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/webdata/web_data_service.h"
 #include "chrome/common/render_messages.h"
 #include "content/browser/in_process_webkit/webkit_context.h"
 #include "content/browser/renderer_host/backing_store_manager.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "net/proxy/proxy_resolver.h"
 #include "net/proxy/proxy_service.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
-#include "third_party/tcmalloc/chromium/src/google/malloc_extension.h"
+#include "third_party/tcmalloc/chromium/src/gperftools/malloc_extension.h"
 
 using content::BrowserThread;
 
 // PurgeMemoryHelper -----------------------------------------------------------
 
 // This is a small helper class used to ensure that the objects we want to use
 // on multiple threads are properly refed, so they don't get deleted out from
 // under us.
 class PurgeMemoryIOHelper
     : public base::RefCountedThreadSafe<PurgeMemoryIOHelper> {
@@ skipping 114 matching lines @@
           content::RenderProcessHost::AllHostsIterator());
        !i.IsAtEnd(); i.Advance())
     PurgeRendererForHost(i.GetCurrentValue());
 }
 
 // static
 void MemoryPurger::PurgeRendererForHost(content::RenderProcessHost* host) {
   // Direct the renderer to free everything it can.
   host->Send(new ChromeViewMsg_PurgeMemory());
 }